Step1: print it out in A4 size paper 1:1;
How to print a 1:1 paper? When you print it, do check the printer properties to don't change the settings to fit the page, should be at "none", also, you need to set all margins to "0"(if your software has margin option, do it, if not, just leave it there), then you get a 1:1 property print out.
Step2: paste them on a thick kraft paper;
Step3: cut off the paper and do it!

All the patterns in our shop are hand drawing with software, and original design in international standard, any DIYer or professional designer can understand and use them to make bags at once. We also have custom order service, if you have any question, welcome to leave message to us.